{"ScriptPreparationCode":"const canvas1 = document.getElementById(\u0027canvas1\u0027);\r\nconst alphaTrue = canvas1.getContext(\u00272d\u0027);\r\nalphaTrue.fillStyle = \u0027rgba(255, 255, 255, 0.3)\u0027;\r\n\r\nconst canvas2 = document.getElementById(\u0027canvas2\u0027);\r\nconst alphaFalse = canvas2.getContext(\u00272d\u0027, {alpha: false} );\r\nalphaFalse.fillStyle = \u0027rgba(255, 255, 255, 0.3)\u0027;","TestCases":[{"Name":"alpha true","Code":"alphaTrue.fillRect(0,0,400,400);","IsDeferred":false},{"Name":"alpha false","Code":"alphaFalse.fillRect(0,0,400,400);","IsDeferred":false}]}